JPH01282990A - Key telephone system - Google Patents

Abstract

PURPOSE:To prevent that an extension telephone set main frame becomes gigantic and to reduce the cost of the title system by housing plural extension telephone sets having line wire control buttons and line wires and controlling the housed line wires by control signal from the extension telephone sets. CONSTITUTION:An extension telephone set 7 has a display part to display the state of each line wire and the line wire control button to control the line wire. The plural extension telephone sets 7 are housed, and the plural line wires are also housed. When the user of the extension telephone set 7 presses the line wire control button, a CPU3 controls a line wire control part 6, controls the housed line wires, and changes a display on the display part of the extension telephone set 7 to the display of a self busy state.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a button telephone device.

C. Prior Art] An extension telephone housed in a conventional button telephone device has a control button for controlling an outside line, and the control button and display are provided in pairs for each outside line. was. The display unit distinguishes the usage status of each outside line by color or by changing the blinking interval, and indicates whether the call is empty, incoming, in use by yourself, in use by someone else, or on hold.

For example, to make an outside call, you can find an outside line and press the outside line control button that is paired with the display, and to answer an incoming call, you can press the outside line control button that is paired with the display that indicates an incoming call. This was possible by pressing the outside line control button.

[Problems to be Solved by the Invention] However, in the conventional example described above, depending on the number of outside lines accommodated, the key telephone device must be equipped with extension telephones equipped with outside line control buttons that are equal to or greater than the number of outside lines. For example, the number of outside lines or 1
As the scale of the telephone increases from 0 lines to 20 lines, the casing of the extension telephone also becomes larger. As a result, the number of parts increases and the cost increases.
It is also inferior in terms of design. In addition, due to the large size of the casing, the desk space becomes narrow due to the telephone, which has many disadvantages such as detracting from the aesthetic appearance.

[Means for Solving the Problems] The present invention has been made in order to eliminate the above-mentioned drawbacks.The present invention has been made in order to eliminate the above-mentioned drawbacks. Regardless of the situation, this is the only way to control the containment outside line.

[Example] An example of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a configuration diagram of the telephone exchange device of this embodiment, in which l is a communication path, 2 is a communication path control unit, 3 is a CPU, 4 is a memory containing programs and data, 5 is an extension control unit, and 6 is an outside line. Control unit 7 indicates an extension telephone.

Fig. 2 shows the extension telephone of Fig. 1 7, where 8 is a display section indicating the outside line status, 9 is a numeric key, 110 is an outside line key, 11 and 12 are other function keys, and 13 is a handset. It is. The outside line accommodated by the telephone exchange device may be in a state such as idle, incoming call, or on hold.This embodiment, in which the outside line is controlled by the outside line key 10 shown in FIG. 2 and the numeric input key 9, is shown in FIG. This will be explained using a program flowchart.

The extension telephone user first presses the 10 outside line key and then presses the 9 number entry key. This operation is shown in steps Sl to 85 in the flowchart.

First, in step S1, a key manual power waiting state is indicated, and if there is key human power, it is determined in step S2 whether the input key is the 10 outside line key. If it is not an outside line key, the process moves to another process, and if it is an outside line key, it waits for numeric input in step S3. Second
The example of the display section 8 in the figure shows that the number of outside lines is 12, and two digits is sufficient for the number of digits to be input, and this determination is made in step S4.

If it is determined in S4 that two digits have been received, the process branches in step S5 depending on the state of the outside line corresponding to the input digit.

If the outside line is in a free state or is vacant, the process moves to step S6 to prepare for making a call from the extension telephone to the outside line. In step S6, the display section 8 corresponding to the number input of the own telephone by pressing the outside line key is changed from an empty state to a self-in-use display. In step S7, the part of the display section 8 other than the own telephone corresponding to the number input is changed from an empty state to a state in which it is being used by another person. S
At step 8, the outside line control unit 6 is instructed to make a call. Step S
At step 9, an instruction is issued to the communication path control section 2 to connect the communication path between the caller and the outside line. Further, in step SIO, the extension control unit 5 is instructed to prepare for receiving digits, and the external line control unit 6 is instructed to send digits.

If it is in the outside line state or is receiving a call, in step Sll the part corresponding to the input number on the display section 8 of the local extension telephone is changed from receiving a call to displaying that it is in use, as in step S6.

In step S12, the part of the display section 8 of the extension telephone other than the own extension telephone corresponding to the input number is displayed as being in use by another person. In step S13, a response operation is instructed to the outside line control section 6, and in step S14, the communication path is connected. Then, the status is set to busy.

If the outside line status is on hold, the process returns to step S in step S15.
6. Similarly to Sll, the part corresponding to the input digits on the display section 8 of the own extension telephone changes from being on hold to being in use.

In step S16, the part of the display section 8 of the extension telephone other than the own extension telephone corresponding to the input number is displayed as being in use by another person. In step S17, the communication path between the local telephone and the external line on hold is connected and a transition is made to a communication state.

If the outside line corresponding to the input number is not installed or is being used by another person, the input is completely ignored as in step S18, and the process returns to the normal idle state.

As described above, according to this embodiment, it is possible to control the outside line by using only the outside line and numeric keys without having to provide as many outside line keys as the number of accommodated outside lines, thereby preventing the phone case from becoming too large. This also has the effect of reducing costs.

[Effects] As described above, according to the present invention, the configuration of a button telephone can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the telephone exchange apparatus of this embodiment. FIG. 2 is a diagram showing an extension telephone housed in the telephone exchange device. FIG. 3 is a program flowchart of this embodiment. 1... Call path 2... Call path control section 3... CPU 4... Memory containing programs 5... Extension control section 6... External line control section 7... Extension telephone 8...・Outside line status display section 9...Number entry key 10...Outside line button 11.12...Other function button 13...Handset 27

Claims (1)

[Claims] A display unit for displaying the status of each external line and at least a plurality of extension telephones each having an external line control button for controlling the external line and accommodating a plurality of external lines; A button telephone device characterized in that it controls.